5605621493 has 2 divisors, whose sum is σ = 5605621494. Its totient is φ = 5605621492.

The previous prime is 5605621481. The next prime is 5605621573. The reversal of 5605621493 is 3941265065.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4539794884 + 1065826609 = 67378^2 + 32647^2 .

It is a cyclic number.

It is not a de Polignac number, because 5605621493 - 2²⁸ = 5337186037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5605621493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5605621193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2802810746 + 2802810747.

It is an arithmetic number, because the mean of its divisors is an integer number (2802810747).

Almost surely, 2^5605621493 is an apocalyptic number.

It is an amenable number.

5605621493 is a deficient number, since it is larger than the sum of its proper divisors (1).

5605621493 is an equidigital number, since it uses as much as digits as its factorization.

5605621493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 5605621493 is about 74870.6984941372. The cubic root of 5605621493 is about 1776.4020126392.

The spelling of 5605621493 in words is "five billion, six hundred five million, six hundred twenty-one thousand, four hundred ninety-three".